瞬态热分析遇到的问题

摩云

瞬态热计算到第二个荷载步出现如下错误信息，不知如何解决。
*** ERROR ***
Present time 3600 is less than or equal to the previous time in a      
transient analysis.

附命令流如下，请各位高手帮助
/SOLU
Time,3600   
timint,on  
DELTIM,10,1,100  
AUTOTS,on　
OUTRES,ALL,ALL　
KBC,0
*do,i,1,24,1
t=i     
DDELET,ALL,TEMP   
FLST,2,12,4,ORDE,12
FITEM,2,14  
FITEM,2,-15
FITEM,2,17  
FITEM,2,-18
FITEM,2,28  
FITEM,2,43  
FITEM,2,48  
FITEM,2,51  
FITEM,2,54  
FITEM,2,66  
FITEM,2,104
FITEM,2,111
SFL,P51X,CONV,3.5, ,Ta,  
FLST,2,30,4,ORDE,25
FITEM,2,2   
FITEM,2,6   
FITEM,2,10  
FITEM,2,12  
FITEM,2,-13
FITEM,2,25  
FITEM,2,29  
FITEM,2,32  
FITEM,2,37  
FITEM,2,40  
FITEM,2,45  
FITEM,2,-46
FITEM,2,50  
FITEM,2,55  
FITEM,2,-56
FITEM,2,58  
FITEM,2,-60
FITEM,2,62  
FITEM,2,-64
FITEM,2,67  
FITEM,2,-71
FITEM,2,82  
FITEM,2,83  
FITEM,2,106
FITEM,2,110
DL,P51X, ,TEMP,Ta,0
LSWRITE,t   
*enddo　
LSSOLVE,1,24,1,
FINISH

cjianhf8488

在瞬态热分析中，后一载荷步的结束时间必须大于前一个载荷步的结束时间！